| 摘要 |
An air plug for use in association with the plastic wrapping of bales of hay to produce and store silage. The plastic wrapped bales form continuous tubes and have a cross section of at least two substantially rectangular bales stacked in vertical alignment. The air plug is a substantially triangular shaped wedge having two matching concave sides and a third convex side for insertion at the perimeter intersection of two adjacent bales, where the concave sides of the wedge engage the hay and the convex side engages the plastic. The plastic wrapping holds the plug in engagement with the hay, preventing the passage of air downstream along the length of the tube upon opening of one end of the tube.
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